How to insert a character every N characters in a string in C++

Question

How can I insert a character into a string exactly after 1 character?

I need to insert \'|\' into the string after every other char

Answer 1

You can use

string& insert (size_t pos, const string& str);

You would have to loop through the string, inserting a character each time.

for (int i = 1; i < str.size(); i++) {
      str << str.insert(i, '|');
      i++;
}